Description
Enjoy classic sudoku!!
[Difficulty]
The number of holes changes depending on the level.
Lv1: 24
Lv2: 30
Lv3: 37
Lv4: 42-43
Lv5: 49-50
Lv6: 56-57
[Others]
* Timer function
You can set a timer from 5 minutes to 1 hour (in 5-minute increments).
* Passcode function
You can set a passcode to play the game.
Useful for preventing excessive play.